Quote:
Originally Posted by JFP in PA
A personal choice...............
There are also several articles that list potential reasons why Subaru head bolts are known to come loose, running from the head gaskets themselves, weak or incorrect bolts that fatigue, to incorrect tightening sequences, and even mention lack of lubrication causing the bolts to bind during installation, leading to lower than expected clamping, not unlike what is described in the ARP white paper.
The problems seems well recognized, if not fully studied.
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Though it is more than coincidental that the only 2 I used assembly lube on were the only two I did (of about 20 or 25) that failed. And of all the ones I did, I've never seen loose head bolts when I tore them down. (besides those two)
If the bolts creak or bind, I take them all out and clean them again, along with the holes.
If it works for you, lube them. More power to you. I won't. And I sure as hell won't put anti-seize on my lugs.
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